Bitfields for TI Professional PC system configuration:
Bit(s)	Description	)
 0	floppy drive 0 (A:, internal) installed
 1	floppy drive 1 (B:, internal) installed
 2	floppy drive 2 (C:, external) installed
 3	floppy drive 3 (D:, external) installed
 4	drive A: is 96tpi (80 tracks)
 5	drive A: is double-sided
 6	60 Hz power instead of 50 Hz
 7	hard disk (E: or E:/F:) installed
 8	serial port 1 installed
 9	serial port 2 installed
 10	serial port 3 installed
 11	serial port 4 installed
 14-12	installed graphics RAM
	000 none (text-only system)
	001 bank A only (graphics limited to 2 of 8 colors)
	111 banks A/B/C (graphics supports 8 of 8 colors)
 15	clock/analog board installed